Which of the Following Determines the Maximum Number of Gray

question 20

Multiple Choice

Which of the following determines the maximum number of gray shades to be displayed on the television monitor?

• A) Window level (WL)
• B) Window width (WW)
• C) Contrast controls on the television monitor
• D) Filtered back-projection (FBP) algorithm

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Definitions:

Bottom-up Processing

A cognitive process where perception starts with an incoming stimulus and builds up to the comprehensive perception, without preconceived cognitive models.

Parvo Cells

Ganglion cells that, because of their sensitivity to differences in hue, are particularly suited to perceiving color and form.

Hue

Hue refers to the distinct characteristic of color perceived by the eye, fundamentally describing colors such as red, blue, green, etc., based on their wavelength in the visible spectrum.

Visual Agnosia

The inability to recognize a visual stimulus despite the ability to see and describe it.